Safety attachment for locks.



PATENTED. r512. 24, 1903.

E. L. RUGGLES. SAFETY ATTAOHMEN-TFOR LOCKS.

nrmcumn IILE'D we. 12; 1902' R0 MODEL.

ATTORNEYS Rms PETERS (20., PHOTD-LIYHQ. WASHINGTON. ofc,

UNITED STATES PATENT OFFICE.

EMMA L. RUGGLES, OF BAYONNE, NEW JERSEY.

SAFETY ATTACHMENT FOR LOCKS.

SPECIFICATION forming part of Letters Patent N0. 721,468, dated February 24, 1903.

Application filed August 12, 1902. Serial No. 119,395. (No model.)

To all whom, it may concern:

Be it known' that I, EMMA- L. RUGGLES, a citizen of the United States, residing at Bayonne, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Safety Attachments for Locks, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains means of which the occupant of a room mayprevent the unlocking of a door after the same has been locked and the key left in the lock.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are desig-. nated by suitable reference characters in each.

of the'views, and in which- Figure 1 is a plan view of my improved safety attachment for looks; Fig. 2, a similar view showing a modification; Fig. 3, an in-' side view of the lock of a door, showing my improved attachment in use and showing the shank of a key in cross-section; and Fig. 4, a.

. suitable means may be employed for this purpartial section on the line 4 4 of Fig. 3.

In the drawings forming part of this specie tion I have shown at a a part of a door which is provided with the usual look I), only the casing of the lock being shown, and said cas-- ing is provided with the usual keyhole c, and in Figs. 3 and l I have shown at dthe shank of a key by which the lock maybe operated, and in the practice of my invention I provid a device of the class specified which is prefer ably made of a piece of strong spring-wire bent centrally to form on elliptical loop e, which is open atone side and provided with laterally-directed arms 6 each of which is preferably provided with an eye link or loop 6 In the use of this device after the door has been locked the loop e is turned longitudinal of the key slot or opening 0 and is passed Patent, is-

thereinto, and said loop e is then turned until the greater diameter thereof is transverse of the slot or opening 0. In this position of the parts the device is held inside of the lock and the arms e may be secured to the face of the lock or to the inside of a door by thumbscrews for in any desired manner. the attachment has been inserted into the lock in the manner described, the key cannot be turned from the outside and the door cannot be unlocked; but a person within the room may detach the attachment and unlock the door Whenever necessary.

In Fig. 2 I have shown a modification of the attachment in which said attachment is composed of two parts,the said parts being separated at the back of the elliptical or loopshaped member e and being connected by bands or rings 6 in such a manner that the length of the member 6 may be adjusted, as will be readily understood. It will be observed that the parts of the loop-shaped member e serve as hooks to hold the device in the lock, and various changes in the forms of these parts may be made, the only object in this connection being to so form these parts that the ends thereof will serve as hooks or similar devices to hold the device in the look when once inserted thereinto.

My invention is not limited to the thumbscrews f or to any other means for securing the attachment to the door, as this securing of the attachment to the door is not an absolutely essential feature, and when desired any pose.

Having fully described my invention, what I claim as new, and desire to secure by Letters 1. The herein-described door-lock attachment comprising a central oblong loop-shaped member open at one side and provided with laterally directed arms, substantially as shown and described.

2. The herein-described doorlock attachment comprising a central oblong loop-shaped member open at oneside and provided with laterally-directed arms, having rings or loops at the ends thereof, substantially as shown and described.

3. The herein-described lock attachment adapted to be inserted into the keyhole of a When look so as to prevent the turning thereof, said my invention I have signed my name, in presztttaehment comprising spring side members ence of the subscribing witnesses, this 11th [0 having separate and oppositely-directed hook day of August, 1902.

ends and adapted to be inserted into the look, and outwardly-directed spring members or EMMA RUGGLES arms whereby the device is operated, sub- Vitnesses:

stentially as shown and described. F. A. STEWART,

In testimony that I claim the foregoing as l O. E. MULREANY. 

